:root {
    --primary: #0a2e3e;
    --secondary: #345a6c;
    --accent: #28a745;
    --bg-color: #f4f7f6;
    --card-bg: rgba(255, 255, 255, 0.9);
    --text-main: #333;
    --text-muted: #666;
    --border-radius: 12px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, #e0eafc, #cfdef3);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 800px;
    margin: 40px auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 10px;
}

header p {
    color: var(--text-muted);
}

.form-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary);
}

input, select, textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.8);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 4px rgba(52, 90, 108, 0.1);
    background: #fff;
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    display: block;
    width: 100%;
    padding: 15px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
}

.btn-submit:hover {
    background: var(--secondary);
}

.btn-submit:active {
    transform: scale(0.98);
}

.footer-info {
    margin-top: 40px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-card {
    animation: fadeIn 0.8s ease-out;
}

/* Response Message */
#response-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    display: none;
}

#response-message.success {
    display: block;
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

#response-message.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}